diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/i386/pread.c')
-rw-r--r-- | sysdeps/unix/sysv/linux/i386/pread.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/i386/pread.c b/sysdeps/unix/sysv/linux/i386/pread.c new file mode 100644 index 0000000000..4c2f18d3f2 --- /dev/null +++ b/sysdeps/unix/sysv/linux/i386/pread.c @@ -0,0 +1,55 @@ +/* Copyright (C) 1997, 1998 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <errno.h> +#include <unistd.h> + +#include <sysdep.h> +#include <sys/syscall.h> + +#ifdef __NR_pread + +static ssize_t __emulate_pread (int fd, void *buf, size_t count, + off_t offset) internal_function; + + +ssize_t +__pread (fd, buf, count, offset) + int fd; + void *buf; + size_t count; + off_t offset; +{ + ssize_t result; + + /* First try the syscall. */ + result = INLINE_SYSCALL (pread, 5, fd, buf, count, offset, 0); + if (result == -1 && errno == ENOSYS) + /* No system call available. Use the emulation. */ + result = __emulate_pread (fd, buf, count, offset); + + return result; +} + +weak_alias (__pread, pread) + +#define __pread(fd, buf, count, offset) \ + static internal_function __emulate_pread (fd, buf, count, offset) +#endif +#include <sysdeps/posix/pread.c> |